Dear PF Forum, I'm interested in how much energy our organic waste contain. I have read this article https://en.wikipedia.org/wiki/Composition_of_the_human_body Elements composition of plants The elements composition of human body (and animal?) and plants resemble. Bacteria has slightly different percentage in nitrogen As I have often read, every living organism has some water percentage in it. Now, what I want to know is this. 1. Average and approximately, how many percent is sugar in living organism? 2. Is sugar mostly C6H12O6? 3. Are there any other sugar compound? Thank you very much My line of questionings will lead to how much methane (CH4) that we can get from organic waste, but I'd like to know some basic facts before I ask my main question.